The hypothalamus produces thyrotropin-releasing hormone (TRH), which stimulates the pituitary gland to release thyroid-stimulating hormone (TSH).
Water Opal is a colourless, clear opal with a play of colour. It is rare and valuable in the Realms, where it is used in scrying devices.ater Opals are valuable gems in the game which may be found. This item appears in Baldur's Gate (game) , Baldur's Gate: Enhanced Edition, Baldur's Gate II: Shadows of Amn and Baldur's Gate II: Enhanced Edition.
Fire Opal. Fire opal is an unusual variety of opal from Mexico, with colors ranging from yellow to orange and orange-red. Like the familiar opal, the fire opal is hydrated silicon dioxide. But unlike the traditional opal, many Mexican opals are clear enough for facets. Play of color, body color and transparency are the three criteria which determine the price of a fire opal.